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Technology Stocks : The Electric Car, or MPG "what me worry?" -- Ignore unavailable to you. Want to Upgrade?

To: kidl who wrote (12726)	3/28/2023 2:02:51 PM
From: Eric	1 Recommendation Recommended By Sr K Respond to of 16007

Yes, mine ventilation can be critical especially with underground coal mines and resulting coal dust and methane leakage. Shall we say boom boom. A very potentially dangerous job! Coal mines in Appalachia for example electrified mining equipment many decades ago (sealed, sparkproof electric motors for example). They were corded in the old days working the face of the mine ripping coal. Just one spark with a combustible mixture. en.wikipedia.org